TrendForce: For the next-generation Low Dk3 glass fiber cloth, Japan’s leading supplier Nittobo has developed an improved NEZ-glass, scheduled for release in 2027. Other suppliers are instead pursuing Q-glass, made from quartz fiber, to break through Nittobo’s technology barrier.
Q-glass is composed of 99.9% SiO₂, with Dk and CTE values far lower than those of existing glass fiber cloth. However, it faces challenges including very high price and extreme hardness that makes processing difficult. CCL makers are therefore expected to adopt Q-glass only in the early stages; as CCL formulations improve, NEZ-glass is expected to gradually replace Q-glass.
[Editor’s Note] To clarify, the potential transition from Q-glass to NEZ-glass is conditional — it depends on improvements in CCL formulations and Nittobo’s successful commercialization of NEZ-glass by 2027.
Q-glass is composed of 99.9% SiO₂, with Dk and CTE values far lower than those of existing glass fiber cloth. However, it faces challenges including very high price and extreme hardness that makes processing difficult. CCL makers are therefore expected to adopt Q-glass only in the early stages; as CCL formulations improve, NEZ-glass is expected to gradually replace Q-glass.
[Editor’s Note] To clarify, the potential transition from Q-glass to NEZ-glass is conditional — it depends on improvements in CCL formulations and Nittobo’s successful commercialization of NEZ-glass by 2027.
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